: Choose "Select" and navigate to the .zip file on your external storage.

Because the X96 Mini is produced by various manufacturers using the same generic branding, there is no single "official" website. You can find this specific firmware file on reputable TV box community sites:

To install a .zip update file, you generally use the "Local Update" method:

: While the link points to an older version, they frequently update their firmware repositories for the S905W chipset.

: On your X96 Mini, open the Update & Backup app from the app drawer.

: This site often hosts the specific June 2020 (20200620) build and provides mirrors for the .zip (OTA) and .img (USB Burning Tool) files.